Systems and methods of handling node failure in a distributed data storage using multi-layer consistent hashing

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United States of America Patent

PATENT NO 11461203
APP PUB NO 20210208987A1
SERIAL NO

17059468

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Abstract

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Disclosed is a systems and methods of distributed data storage using multi-layers consistent hashing comprising: a plurality of storage nodes providing data storage and redundancy protection; a plurality of management nodes maintaining the properties of the storage nodes and mapping information from virtual groups to storage nodes; a plurality of monitor nodes maintaining the state of storage nodes and handling the changes of states of storage nodes including joining, decommissioning and failure; and one or more clients providing entries for applications or users to access the storage system. The storage nodes is in a hierarchical tree arrangement, and each storage node in each layer of the tree is allocated with a plurality of identities and configured for remaining hash space with consistency. Instead of sharing one hash space among all storage nodes, there are a plurality of hash spaces kept consistent in each layer of the storage hierarchical tree.

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Patent Owner(s)

  • HERE DATA TECHNOLOGY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hao, Bin Guangdong, CN 8 4
Zhang, Jingyao Guangdong, CN 11 5
Zhu, Jian Guangdong, CN 156 535

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